Date-to-date calculator

Days between dates

Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.

Excluding the start date

162,817 days

From Thursday, November 27, 1580 to Monday, September 7, 2026.

Monday–Friday weekdays116,297
Weeks and days23,259w 4d
Calendar span445 years, 9 months, 11 days

Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.